Stream M: Decentralized / On-site Wastewater Systems


13.1 Reclaimed water use for decentralized wastewater systems

13.2 Rural onsite sewerage systems: Best practices for sustainable development

13.3 Effluent sewers – An environmental profile



13.1 Reclaimed water use for decentralized wastewater systems

Presented By: Madhu Mittal, MSR Solutions Inc.
Time: Tuesday, 2:00 - 2:30 PM

The ever-growing demand on fresh water can be offset by recycling the water we consume and reclaiming the sewage for beneficial purposes. Remote communities often have inadequate sources of water supply and due to their geographical location, limited wastewater disposal options. To overcome the issues of wastewater disposal and to reduce the demands on potable water, reclaiming and recycling of wastewater for uses like agriculture, landscape irrigation, toilet flushing and industrial processes is pragmatic.

Reclaimed water use is allowed in BC as per the Municipal Wastewater Regulation (MWR), which allows reclaimed water use under various levels of exposure potential categories, with varying water quality criteria to protect the environment and human health. For municipal scale projects, use of reclaimed water has been successfully carried out for irrigation purposes for decades. There is an emerging need to recycle or reclaim the wastewater for small communities, but the requirements of approval process are generally very onerous for small systems with limited funding.

MWR registration was recently granted for reclaimed water use for landscape irrigation and toilet flushing for the Twin Cedars development wastewater system, owned and operated by Cowichan Valley Regional District (CVRD). Registration is granted for use under the greater exposure category of reclaimed water under the MWR with stringent water quality with rigorous monitoring requirements. Reclaimed water use has also been approved for Red Chris Mine and is ongoing for Elkington Forest development. The successes and challenges of reclaimed water use for small communities are expounded in this paper.

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13.2 Rural onsite sewerage systems: Best practices for sustainable development

Presented By: Regan Purdy, Ministry of Community, Sport & Cultural Development.
Time: Tuesday, 2:30 - 3:00 PM

How does the care and use of onsite sewerage systems determine the long-term environmental and human health impacts of these systems? What are the roles of Approving Authorities in the subdivision process? What is the desired outcome of these newly developed Best Practices? How can these Best Practices act as tools for your sustainable land development efforts where onsite sewerage systems are proposed? To answer these questions and more, the Local Infrastructure and Finance Division within the Ministry of Community, Sport, and Cultural Development (MCSCD), along with a consultant (Opus DaytonKnight) and inter-agency Committee have developed the Sewerage/Subdivision Best Practice Guideline. These Best Practices have been designed to be applicable Province-wide, with the addition of an implementation strategy (consultation) for the adoption of the Guideline by Approving Authorities (local governments, Provincial Approving Officers and Health Authorities). This presentation will highlight Current Practices, including legislation and Best Practices with a focus on the use of the Guide, in addition to Accepted Guidelines such as specifics surrounding hydrogeological soils and site assessments, as well as example bylaws and restrictive covenants. Additional links and tools will help you in your efforts towards sustainable development and increase awareness/knowledge for local governments in understanding their role and authority.

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13.3 Effluent sewers – An environmental profile

Presented By: Kirk Wimber, Orenco Systems Inc.
Time: Tuesday, 3:00 - 3:30 PM

Effluent sewer technology has improved so dramatically over the past several decades that these "decentralized sewer systems" are now highly recommended by the U.S. Environmental Protection Agency. Many developers, engineers, and municipalities want to choose products for construction projects that reduce their impact on the environment. Wastewater projects are no exception. The need for environmentally sound sewer systems is especially great in environmentally sensitive areas. Effluent Sewers are an environmentally sustainable solution for unsewered communities, new subdivisions, fringe development, and municipalities with inadequate or maxed-out sewer infrastructure.

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